window.addEvent('domready', function(){
	
	$('drop_down_menu').getElements('li.menu').each( function( elem ){
		var list = elem.getElement('ul.links');	
		var myFx = new Fx.Slide(list).hide();			
		elem.addEvents({
			'mouseenter' : function(){ 					
				myFx.cancel();
				myFx.slideIn();					
			},
			'mouseleave' : function(){ 
				myFx.cancel();
				myFx.slideOut();					
			}
		});	
	})
});